What is Loose Coupling- Its Importance in REST API Design?
One of the most important ideas in the world of software engineering is the concept of loose coupling. In a loosely coupled design, components are independent, and changes in one will not affect the operation of others. This approach offers optimal flexibility and re-usability when components are added, replaced, or modified.
Loosely Coupled vs Tightly Coupled
Conversely, a tightly coupled design means that components tend to be interdependent. Changes in a single component can have a system wide impact, with unanticipated and undesirable effects.
Russell Crowe as John Nash in the movie ‘A Beautiful Mind’
These days, companies are overflowing in data and tolerating ancient API-integrations. Across all industries.
Buried in that data are trends that point to customer insights, inefficiencies and synergy opportunities that could provide a competitive edge to a company. Or, just help a company catch back up to its competitive peers.
But how to best harness this data? Not everyone is like the genius John Nash in the movie ‘A Beautiful Mind’ that can look at raw data and see the hidden, correlated magic. After all, John Nash was an 8 sigma event.
The tough choice of NoSQL vs SQL. An important decision for any business that may pay the price for down the road if you don’t plan accordingly. Here, we break down the important distinctions and discuss NoSQL vs SQL for you to make an informed decision.
What is NoSQL
NoSQL or Not Only SQL is an alternative to relational databases such as MySQL, Postgres, and SQL Server. Typically NoSQL databases are popular for working with large sets of data as data is stored in the form of flat collections so reading or writing operations is much faster. There is also less management for NoSQL databases as they support automatic repair, data distribution, and simpler data models.
MongoDB, Couchbase, and Cassandra are popular NoSQL databases, but what do their queries look like? If NoSQL is all about leaving SQL behind, then what happens? These are fair questions, for example MongoDB uses its own syntax that kind of resembles JavaScript. Let’s take a look:
db.inventory.find( { status: "D" } )
In the above query the example selects from the inventory collection all documents where the status equals “D”. It is not too difficult to follow, but does feel a little foreign if you are used to SQL.
What is SQL
SQL or Structured Query Language is a language used in programming and designed for managing data held in a relational database management system. Some examples of popular SQL databases are Postgres, Microsoft SQL Server and MySQL. One of many reasons for its popularity is how portable it is. SQL can be used in the program in PCs, servers, laptops, and even some of the mobile phones. Unlike NoSQL databases, SQL databases have an established, well defined standard. The language is also very straightforward, let’s take a look at it:
SELECT * FROM inventory WHERE status = "D"
In the above query the example selects from the inventory collection all documents where the status equals “D”. Sound familiar? That is because it is doing the same thing the MongoDB query is doing.
This all depends on what your goals are. SQL databases tend to be beneficial for companies that have a clear business structure and do not plan on making many changes to their database structure. If your company has rapid growth or no clear schema definitions then a NoSQL database is the right choice for you. If you’re uncertain about which type of database is best for your business, you can schedule a consultation with one of our experts today.
What if you want to use a SQL database but not learn SQL or the opposite, use a NoSQL database without learning how to handle the data? That is where DreamFactory comes into play, interact with your data without having to learn SQL. In minutes generate an API from nearly any datasource that is fully documented and secure without code. Contact an expert today to learn how to cut development cost and time in half.
Do you have a ton of data sources and do not know how to expose them? Do you know you need a Microsoft SQL Server API but don’t know where to begin to build it? Look no further, DreamFactory can take any database and generate a fully documented and secure REST API faster than making a sandwich. All you need is your database credentials and DreamFactory will handle the rest, instantly generating Swagger API documentation and securing your API by way of API keys. Follow along with the blog or our video below!
Installing DreamFactory
In order to get started you must install DreamFactory, which is Open Source and gives you the ability to try out a numerous amount of popular databases. To spin up your own hosted environment for free click here.
Did you know you can generate a full-featured, documented, and secure Microsoft SQL Server REST API in minutes using DreamFactory? Sign up for our free 14 day hosted trial to learn how! Our guided tour will show you how to create an API using an example database provided to you as part of the trial!
Now the fun part. Once you have DreamFactory up and running you will be on the Admin panel. From there you will navigate to the Services tab to connect your database for your API. For example I have selected a Microsoft SQL Server database but it is nearly identical for any database you will be connecting to. Connecting your database typically only requires filling out these 5 fields as shown below.
Upon saving there will be a success window pop-up saying “Service saved successfully”. What it doesn’t tell you is all the magic it just did behind the scenes. In just that short amount of time, it generated your REST API. So now if you navigate to the API Docs tab you can see your new documentation for the API and actually interact with it via the “Try it out” button.
Securing and Interacting with the API
I can end it here now that you have generated your API, but where is the fun in that? Now let’s actually see the API in action! First things first, let’s generate an API key to be paired with the API for security purposes. DreamFactory does not allow access to the API without being authenticated. Let’s navigate to the Roles tab and create a Role for our API. This Role with correspond with the API key so different users can have different privileges based off different keys.
For my Role I have pointed it to the SQL Server Service we just created and told it to only allow GET calls on the endpoints. This will ensure anyone using this API key will not be able to, for example delete data from the database. We must now link this Role to an API key. If we now go to the Apps tab we can create a new API key with the corresponding Role.
Once we hit save we are able to see the API key generated for our use. Just to show how it works I will be using Insomnia, a popular HTTP service, to call our DreamFactory API. I will call the customers table, passing the API key in the headers for authentication.
Did you know you can generate a full-featured, documented, and secure Microsoft SQL Server REST API in minutes using DreamFactory? Sign up for our free 14 day hosted trial to learn how! Our guided tour will show you how to create an API using an example database provided to you as part of the trial!
As you can see I have access to our new API and how much time did that take? Way less time than building this API yourself! If you would like to find out exactly how much time and money DreamFactory can save you, check out our API calculator. Otherwise what are you waiting for? Go build your next application using DreamFactory already!
If you have any questions about the platform, or just APIs in general, we’d love to hear from you! Contact us.
You need to save money, deploy projects faster, and spend more time on developing application experiences that enthrall users. It is practically a certainty that APIs will play a critical role in your software development process, but how much does it cost to build an API?
It’s important to understand that there is more to an API than just coding an interface to some data source. Whether you are planning on hiring a contractor or assigning a new project to your team, an API calculator can help you understand the time and cost required to develop a mission-critical part of your next project.
Need access to SQL data from your mobile, web or IoT apps?
To have an easy and secure way to add a SQL Server REST API to any SQL database in minutes, we are going to show how you can use DreamFactory to do just that. Use the DreamFactory platform to connect your database, utilizing nothing more than your database credentials, then DreamFactory auto-generates a REST API for your SQL database – it’s that simple!
In this blog post we’ll show how to REST-enable any SQL database, including the creation of a SQL Server REST API. DreamFactory can REST-enable a huge range of databases and data sources including the most popular platforms like MySQL, Microsoft SQL Server (check out our article that examines the differences between MySQL and SQL Server) and even Excel. We’ll also show some simple examples of how to use the REST API to manage your SQL schema and data.
Chuck Norris Joke Enthusiasts Trust DreamFactory to Automate APIs
Thanks to amusing Chuck Norris API database site The Internet Chuck Norris Database, you can have some fun and keep the Chuck Norris jokes flowing. With the help of DreamFactory and our API automation tools, you will always have life-changing insights making those around you just a bit more intelligent, good looking and successful. Who doesn’t need to understand such nuggets as:
Contrary to popular belief, the Titanic didn’t hit an iceberg. The ship was off course and ran into Chuck Norris while he was doing the backstroke across the Atlantic.
In the 2.11 release of Dreamfactory we added support for GraphQL, the open sourced query language written by Facebook. You can now harness the power of GraphQL inside of the API automation & integration structure of Dreamfactory. Both REST and GraphQL offer advantages and disadvantages depending on your use case. There are several articles and posts out there expanding on this, but let’s walk through how to incorporate this service in your Dreamfactory instance. GraphQL is available in all of our product levels: Open Source, Silver and Gold.Continue reading “Dreamfactory and GraphQL”
DreamFactory 2.10 is live! The 2.10 release adds support for the OpenAPI 3.0 spec, role-based access control for the DreamFactory Admin App, and a number of bug fixes. Head on over to Bitnami or GitHub to install DreamFactory 2.10. Here’s what’s new:
There are many diverse organizations around the world leveraging the power of DreamFactory’s open source REST API to tackle some really cool projects. One government organization in Southeast Asia is using our REST API to power their Geographic Information System (GIS) website.
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